CN203868501U - Propelling device for use in culvert jacking construction - Google Patents

Abstract

The utility model discloses a propelling device for use in culvert jacking construction. The propelling device comprises a support back and a sliding plate, wherein the back of the support back is provided with a triangular support frame; a jack is arranged on the front of the support back; the working end of the jack is provided with a motor; the bottom of the motor is provided with a sliding seat; the output end of the motor is rotationally connected with a transmission shaft; a rotary cutter is arranged at the end of the transmission shaft; the sliding plate positioned below the rotary cutter is provided with a soil sucking device; the lower end faces of both sides of the sliding plate are provided with fixing teeth; the upper end faces of both sides of the sliding plate are provided with limiting guide plates; a push plate is annularly arranged at one end, which is connected with the transmission shaft, of the motor. The resistance of a weak layer in jacking construction can be reduced through the rotary cutter, thereby bringing convenience to construction propelling. The propelling device is particularly suitable for construction in a weak soil layer, is high in construction efficiency, and is convenient to operate.

Description

Propulsion devices for culvert jacking construction

technical field

The utility model belongs to the technical field of building construction, in particular to a propulsion device for culvert jacking construction.

Background technique

Jacking construction is a commonly used construction method at present. When crossing railways, highways, and urban road subgrade construction, jacking construction technology is usually used. Apply pressure to the prefabricated pipe culvert through the horizontal hydraulic jack, and use the sliding device to make the pipe culvert carry out soil-eating jacking under the corresponding roadbed.

At present, the existing jacking construction device has the following defects: 1) Since there is no device to reduce the resistance of the soil layer in front of the jacking device, a large amount of manpower and material resources are required during the jacking construction, and the opening of small culverts in rural production roads The application in excavation is also relatively limited; 2) Pipe culvert jacking has higher requirements on the strength of the rear support back, which must be able to withstand the maximum jacking force during the jacking process. It is ideal if there is a natural back, but due to construction conditions Restrictions, when there is no natural back support, it is necessary to build the back, which not only consumes materials, but also takes man-hours, which affects construction efficiency and work progress.

Utility model content

The technical problem to be solved by the utility model is to provide a propulsion device for culvert jacking construction that can weaken the resistance of the soil layer, facilitate construction, and facilitate the improvement of construction progress.

In order to solve the problems of the technologies described above, the technical solution adopted by the utility model is:

The propulsion device used for culvert jacking construction includes a support back and a slide plate, a triangular support frame is arranged at the back of the support, a jack is installed at the front of the support back, a motor is provided at the working end of the jack, and a motor is provided at the working end of the jack. A sliding seat is provided at the bottom, and the output end of the motor is rotatably connected to a transmission shaft, and a rotary knife is installed at the end of the transmission shaft; a soil suction device is provided on the sliding plate below the rotary knife; The lower end surface is provided with fixed teeth, and the upper end surfaces on both sides of the slide plate are provided with limit guide plates; the end of the motor connected to the transmission shaft is provided with a push plate in the circumferential direction.

As a preferred technical solution, the slider includes at least two slider assemblies, the front end of the slider assembly is provided with a protrusion, the rear end of the slider assembly is provided with a groove that matches the protrusion, and two adjacent The said slide plate components are inserted into each other.

As an improvement to the above technical solution, the soil suction device includes a soil suction head, and the soil suction head is connected to a negative pressure source through a telescopic soil suction pipe. The negative pressure source can adopt a high-power structure similar to that of a vacuum cleaner.

As a further improvement to the above technical solution, the rotary knife is detachably connected to the transmission shaft, and when the rotary knife is damaged, it can be easily replaced or repaired.

Owing to having adopted above-mentioned technical scheme, the utility model compared with prior art, the technical progress that obtains is:

(1) The resistance of the weak layer soil to the jacking construction can be reduced through the rotary knife, which is convenient for construction advancement; the cut soil can be transported to the outside of the pipe culvert in time through the soil suction device;

(2) Through the triangular support frame, the horizontal jacking force produced by the jack can be effectively resisted; the slide plate can be reinforced through the fixed teeth, which is convenient to improve construction efficiency; Displacement deviation of pipe culvert;

(3) The rotary knife is detachably connected, and when damaged, it can be easily replaced or repaired, and the use cost is low;

(4) The skateboards are formed by inserting skateboard components. The skateboard components are detachable. After the jacking device is pushed forward for a certain distance, the rear skateboard components can be disassembled and installed to the front, so that the jacking device can move upward on the skateboard. forward.

The utility model can be applied to the construction of weak soil layers, especially in the construction of small-scale farmland water conservancy, but the construction area and roadbed should not be soaked in accumulated water, and the use of rock formation areas should be avoided as much as possible.

Description of drawings

The following drawings are only intended to illustrate and explain the utility model schematically, and do not limit the scope of the utility model. in:

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is a schematic structural diagram of A-A direction in Fig. 1;

Fig. 3 is the structural representation of soil suction device;

Fig. 4 is the state diagram during construction of the utility model embodiment;

In the figure: 1-supporting back; 2-slider; 21-fixed tooth; 22-limit guide plate; 23-slider assembly; 24-bump; 25-groove; 3-jack; Seat; 6-drive shaft; 7-rotary knife; 8-push plate; 9-pipe culvert; 10-soil layer; 11-support frame; 12-soil suction device; 121-soil suction head; 122-extensible soil suction pipe ; 123-negative pressure source; 124-suction bucket.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, further set forth the utility model. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. Needless to say, those skilled in the art would realize that the described embodiments may be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

Example:

As shown in Figures 1 to 4, the propulsion device used for culvert jacking construction includes a support back 1 and a slide plate 2, a triangular support frame 11 is provided on the back of the support back, and a Jack 3, the working end of the jack 3 is provided with a motor 4, the bottom of the motor 4 is provided with a slide seat 5, the output end of the motor 4 is rotatably connected to a transmission shaft 6, and the end of the transmission shaft 6 is equipped with a rotary knife 7 ; The slider 2 located below the rotary knife 7 is provided with a soil suction device 12; the lower end surfaces of both sides of the slider 2 are provided with fixed teeth 21, and the upper end surfaces of the slider 2 are provided with a limit guide plate 22; The end of the motor 4 connected with the transmission shaft 6 is provided with a push plate 8 in the circumferential direction. Described slide plate 2 comprises three slide plate assemblies 23, and the front end of described slide plate assembly 23 is provided with lug 24, and the rear end of described slide plate assembly 23 is provided with the groove 25 that matches with described lug 24, two adjacent The sliding plate assemblies 23 are inserted into each other. The rotary knife 7 is detachably connected to the transmission shaft 6 .

As shown in FIG. 3 , the soil suction device 12 includes a soil suction head 121 , and the soil suction head 121 is connected to a negative pressure source 123 through a retractable soil suction pipe 122 . The negative pressure source 123 can adopt a structure similar to that of a vacuum cleaner with high power. The negative pressure source 123 is provided with a soil suction bucket 124, and the negative pressure source 3 is connected to a power supply. When in use, the soil suction head 121 is placed at the bottom below the rotary knife 7 , turn on the power supply, negative pressure source 3 starts to work, and when the soil suction head 121 contacts the crushed soil, the strong air flow will quickly suck the nearby soil body in the soil suction bucket 124 by the soil suction head 121, the retractable soil suction pipe 122.

The triangular support frame 11 can effectively resist the jacking force generated by the jack 3 . In order to improve the fixing strength of the slider 2 , the slider components 23 are respectively provided with fixing teeth 21 . The limit guide plate 22 can effectively reduce the displacement deviation of the pipe culvert during jacking construction.

The rotary knife 7 is detachably connected to the transmission shaft 6. If the rotary knife 7 is damaged, it can be replaced or repaired at any time, which is convenient to use and reduces the cost of use. The rotary knife 7 can reduce the resistance of the weak layer soil to the jacking construction, which is convenient for construction advancement; and has a good supporting effect on the stability of the soil above the construction section to avoid collapse.

The slide plate 2 includes three slide plate assemblies 23, and the rear slide plate assembly 23 is inserted into the groove 25 of the front slide plate assembly 23 through the protrusion 24. After the jacking device advances forward for a certain distance, the rear slide plate assembly 23 It can be removed and mounted to the front so that the jacking unit continues to advance on the slide.

Construction process: as shown in Figure 4, the rotary knife 7 is driven by the rotation of the motor 4 to weaken the soil layer 10, and the soil cut by the rotary knife 7 is transported to the outside of the pipe culvert 9 in time through the soil suction device 12, under the thrust of the jack 3 Next, the pipe culvert 9 is gradually pushed forward. Under the guidance of the limit guide plates 22 on both sides, the displacement deviation of the pipe culvert 9 is small, and the construction is finally completed.

Claims (4)

1. A propulsion device for culvert jacking construction, comprising a support back and a slide plate, characterized in that: the back of the support is provided with a triangular support frame, the front of the support back is equipped with a jack, and the working end of the jack is provided There is a motor, the bottom of the motor is provided with a sliding seat, the output end of the motor is connected to a transmission shaft in rotation, and a rotary knife is installed at the end of the transmission shaft; a soil suction device is provided on the sliding plate below the rotary knife ; The lower end surfaces of both sides of the slide plate are provided with fixed teeth, and the upper end surfaces of both sides of the slide plate are provided with limit guide plates; the end of the motor connected to the transmission shaft is provided with a push plate in the circumferential direction. 2. The propulsion device for culvert jacking construction according to claim 1, characterized in that: the slide plate comprises at least two slide plate assemblies, the front end of the slide plate assembly is provided with a bump, and the rear end of the slide plate assembly The end is provided with a groove matching with the protrusion, and two adjacent slide plate components are inserted into each other. 3. The propulsion device for culvert jacking construction according to claim 2, wherein the soil suction device comprises a soil suction head, and the soil suction head is connected to a negative pressure source through a telescopic soil suction pipe. 4. The propulsion device for culvert jacking construction according to claim 1, 2 or 3, characterized in that: the rotary knife is detachably connected to the transmission shaft.